Titanium Dioxide Nanoparticles-Induced Genotoxic Effects in Mosquito

Overview

Journal Toxics

Date 2025 Jan 8

PMID 39771086

Authors

Aastha Saini

Kanwaljit Kaur Ahluwalia

Amrik Singh Ahluwalia

Neelam Thakur

Puneet Negi

Abeer Hashem

Khalid F Almutairi

Elsayed Fathi Abd Allah

Affiliations

Soon will be listed here.

Abstract

Titanium dioxide (TiO) nanoparticles are being extensively used in a wide range of industrial applications for producing a variety of different consumer products, including medicines and even food items. The consumption of these products is increasing at an alarming rate, and this results in the release of these nanoparticles in the environment, causing a threat to organisms thriving in aquatic as well as terrestrial ecosystems. That is why screening such materials for their genotoxic effects, if any, becomes essential. A toxicity assay was performed to determine the LD of these nanoparticles for the mosquito by Probit analysis. Early fourth instar larvae were exposed to the selected dose of 50 µg/mL, which is <LD value, for 24 h treatment. Chromosomal slides were prepared from lacto-aceto-orcein-stained gonads of adult mosquitoes developed from treated and control larvae. These nanoparticles were reported cytotoxic as a statistically significant decline in mitotic index in treated mosquitoes than controls were observed. The nanoparticles were also found to induce various structural and numerical chromosomal aberrations in the treated lot. In the end, it can be concluded that these nanoparticles do have a genotoxic effect. The present study provides a caution against further use of these nanoparticles. There must be the development of strategies for the safe, sustainable use as well as proper disposal of these nanoparticles so as to protect both biotic and non-biotic components of the environment.

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